<>
# attempt 1
my @test = ();
push @test { name=>"foo",value=>"blitz" };
# Gets "Global symbol "%test" requires explicit package name at ...[push
line]" !?!?! there is no %test.
You forgot a comma, so Perl interpreted it as something like this:
push @test{'name','foo',value','blitz'};
Adding a comma after @test will make it work
# attempt 2
my @test = ();
push @test \{ name=>"foo",value=>"blitz" };
# Gets "Backslash found where operator expected at ...[push line]"
This would have made a reference to a hash reference (if you had the comma in), which wouldn't have worked anyway.
<>
# attempt 4
my @test = [
{ a=>"b",c=>"d" },
{ e=>"f",g=>"h" },
];
$template->param(itemloop => [EMAIL PROTECTED]);
# Gets "HTML::Template->output() : fatal error in loop output :
HTML::Template->param() : Single reference arg to param() must be a
has-ref! You gave me a ARRAY. at ..."
To Perl, you're creating an array, the first element being an arrayref, which contains hashrefs. What you actually wanted to do is:
my @test = (
{ a=>"b",c=>"d" },
{ e=>"f",g=>"h" },
);Note parens instead of square brackets.
# attempt 5
my %test;
$test{"a"}="b";
$test{"c"}="d";
$test{"e"}="f";
$template->param(itemloop => \%test);
# Gets "HTML::Template::param() : attempt to set parameter 'itemloop'
with a scalar - parameter is not a TMPL_VAR! at ..."
This one is interesting. Looks like HTML::Template trys to use the hashref in its scalar representation (like HASH(0xffffffff)) and then errors out when your param isn't a loop.
# attempt 6
my %test;
$test{"a"}="b";
$test{"c"}="d";
$test{"e"}="f";
$template->param(itemloop => %test);
# Gets "You gave me an odd number of parameters to param()! at ..."
To Perl, your params are being flatened like this:
$template->param(itemloop => a,
b => 'c',
d => 'e',
f
);That's because the param method takes a list with all the parameters being flattened into a hash. Since you're putting 'itemloop => ' first, Perl sees that as the first element in the hash. That's why you need to use references.
Please read perldsc.
<>
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